stryker
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The extendable JavaScript mutation testing framework
43 lines • 1.78 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var esprima_1 = require("esprima");
/**
* Represents a mutator which can remove the conditional clause from statements.
*/
var RemoveConditionalsMutator = /** @class */ (function () {
function RemoveConditionalsMutator() {
this.name = 'RemoveConditionals';
this.types = [esprima_1.Syntax.DoWhileStatement, esprima_1.Syntax.IfStatement, esprima_1.Syntax.ForStatement, esprima_1.Syntax.WhileStatement, esprima_1.Syntax.ConditionalExpression];
}
RemoveConditionalsMutator.prototype.applyMutations = function (node, copy) {
if (this.canMutate(node)) {
var nodes = [];
if (node.test) {
nodes.push(this.booleanLiteralNode(node.test.nodeID, false));
}
else {
var mutatedNode = copy(node);
mutatedNode.test = this.booleanLiteralNode(-1, false);
nodes.push(mutatedNode);
}
if (node.type === esprima_1.Syntax.IfStatement || node.type === esprima_1.Syntax.ConditionalExpression) {
nodes.push(this.booleanLiteralNode(node.test.nodeID, true));
}
return nodes;
}
};
RemoveConditionalsMutator.prototype.booleanLiteralNode = function (nodeID, value) {
return {
nodeID: nodeID,
raw: value.toString(),
type: esprima_1.Syntax.Literal,
value: value
};
};
RemoveConditionalsMutator.prototype.canMutate = function (node) {
return this.types.indexOf(node.type) >= 0;
};
return RemoveConditionalsMutator;
}());
exports.default = RemoveConditionalsMutator;
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